Caricography. AB 
Spica unica. androgyna subquadrifiora; flore staminifero 
terininali subsolitario; fructibus tristigmaticis lanceolatis sub- 
triquetris teretibus valde reflexis, squama oblongo-lanceolata 
vix duplo longioribus. 
Culm 3—-8 inches high, ascending, triquetrous, scabrous 
above; leaves subradical, two, sometimes more, linear, sub- 
convolute, about the length of the culm, sheathed at the 
base; spike single, terminal, androgynous; staminate flowers 
above, subsolitary, with a lanceolate scale becoming brown- 
ish; fruit 2—4, long, lanceolate, roundish, reflexed, slightly 
triquetrous, with a caducous scale, which is oblong-lanceo- 
Jate, and a little more than half the length of the fruit; stig- 
mas three. 
Flowers in June. Common in the marshes of Sweden; 
in our country found at Ashfield with C. dimosa, in a marsh, 
and at Hawley, in a bog near the meeting-house, by Dr. J. 
Porter, from whom my specimens were received. 
This is a singular and beautiful species, finely figured by 
Schk. 
61. C. lacustris. Willd. 
Pursh, Eaton, Schw. Ell. ?, Pers. no. 200. 
Schk. tab. Oooo fig 152. 
C. riparia. Muh. 
Spicis distinctis; spicis staminiferis subquaternis erectis, 
inferioribus sessilibus ; spicis fructiferis tristigmaticis binis 
vel ternis oblongis cylindraceis erectis brevi-pedunculatis, 
suprema subsessili; fructibus oblongis nervosis glabris bifur- 
catis, squama oblongo-lanceolata paulo longioribus. 
Culm 2—3 feet bigh, triquetrous, scabrous above, large ; 
leaves linear-lanceolate, longer than the culm, rough, large, 
broad, carinate; bracts long, leafy, large, surpassing the 
culm, with scarcely any sheaths ; staminate spikes 3—4, ob- 
long, large, erect, highest pedunculate; staminate scale ob- 
long, rather obtuse, mucronate, dark brown; pistillate 
spikes two or three, oblong, cylindric, short pedunculate, 
erect, highest nearly sessile; stigmas three; fruit oblong, 
nerved, glabrous, brown, bifurcate, scarcely. beaked ;_ pistil- 
late scale oblong caspidate, brown, nearly equalling the 
fruit. Colour of the piant rather light green. 
Flowers in May and June. Grows in marshy situations 
and along ditches in low lands; common, k 
This species is ‘nearly related to C. riparia, Curtis, C. 
paludosa, Gooden., and C. évoluta, Horton. Muhienberg 
